Girls' name · peaked in 2000
Kassidy name popularity since 1925
21,715 babies born in the US from 1925 to 2025 were named Kassidy (98.0% girls, 2.0% boys). Half of them were born in 2006 or earlier, so the typical Kassidy is about 20 years old in 2026. Kassidy peaked in 2000 as the #314 name for girls, and it was outside the top 1,000 in 2025.
Key facts
- US babies since 1925
- 21,715
- Named Kassidy, 1925–2025
- In 2025
- Not top 1,000
- #1,039 for girls in 2025
- Girls / boys
- 98.0% girls
- 21,282 girls · 433 boys
- Most popular in
- Utah
- 2.32× its national share
Peak year is the year Kassidy made up the largest share of US girls, in records going back to 1880. Typical age is based on births from 1925 on, not on who is living today.
Kassidy births per year, 1925–2025
2000 was the biggest year for Kassidy both by count and as a share of all babies.
- Fastest rise: Between 1992 and 1997, Kassidy became 6.1× more common, from 1 in 14,000 baby girls to 1 in 2,280.
- Steepest fall: Between 2020 and 2025, its share of baby girls fell by 46%, from 1 in 3,650 to 1 in 6,700.
Shaded on the chart. Both compare Kassidy's share of all US girls five years apart, counting only years with at least 100 babies named Kassidy.
Decade by decade
Babies named Kassidy in each decade, and its rank among girls' names in the middle year of the decade (1935, 1945 … 2025).
| Decade | Girls | Boys | Rank |
|---|---|---|---|
| 1925–29 | 0 | 0 | – |
| 1930s | 0 | 0 | Under 5 |
| 1940s | 0 | 0 | Under 5 |
| 1950s | 0 | 0 | Under 5 |
| 1960s | 0 | 0 | Under 5 |
| 1970s | 44 | 0 | #8,457 |
| 1980s | 499 | 65 | #1,891 |
| 1990s | 4,690 | 84 | #427 |
| 2000s | 7,805 | 80 | #423 |
| 2010s | 6,265 | 141 | #465 |
| 2020–25 | 1,979 | 63 | #1,039 |
Ranks count every name given to at least 5 girls that year, so they can go past 1,000. "Under 5" means fewer than 5 girls got the name.
Generation fingerprint
57.1% of babies named Kassidy from 1925 to 2025 were born in the Gen Z years (1997–2012). The full split by generation:
Where Kassidy is most popular
The index compares Kassidy's share of babies in each state with its share nationwide, 1925–2025 (1.50× = 50% more common). States with at least 300 babies named Kassidy.
| State | Index | Babies |
|---|---|---|
| Utah | 2.32× | 391 |
| Oklahoma | 1.73× | 446 |
| Georgia | 1.56× | 853 |
| Arizona | 1.42× | 364 |
| South Carolina | 1.41× | 389 |
Other spellings
Spellings that sound like Kassidy and were given to at least 1,000 girls from 1925 to 2025, with the year each one was most popular.
| Spelling | Girls | Peak year |
|---|---|---|
| Kassidy (this page) | 21,282 | 2000 |
| Cassidy | 60,848 | 1999 |
| Kassidi | 1,241 | 1998 |
Names with a similar story
Of the other 1999 names on this site, these six had the share of babies closest in shape to Kassidy's from 1925 to 2025, however common each one got. Each line is scaled to its own high; the dashed line is Kassidy.
Names from the same era
Other common names that peaked within two years of Kassidy (2000).
Source: U.S. Social Security Administration national and state baby-name data, which covers names given to at least 5 babies of one sex in a year. About the data